20486972

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{449}}^1$

素因数の和:542

約数の個数: 48

約数和(自身を含む): 42184800

約数和(自身を除く): 21697828

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 61, 68, 122, 187, 244, 374, 449, 671, 748, 898, 1037, 1342, 1796, 2074, 2684, 4148, 4939, 7633, 9878, 11407, 15266, 19756, 22814, 27389, 30532, 45628, 54778, 83963, 109556, 167926, 301279, 335852, 465613, 602558, 931226, 1205116, 1862452, 5121743, 10243486, 20486972]

約数ペア:

[(1, 20486972), (2, 10243486), (4, 5121743), (11, 1862452), (17, 1205116), (22, 931226), (34, 602558), (44, 465613), (61, 335852), (68, 301279), (122, 167926), (187, 109556), (244, 83963), (374, 54778), (449, 45628), (671, 30532), (748, 27389), (898, 22814), (1037, 19756), (1342, 15266), (1796, 11407), (2074, 9878), (2684, 7633), (4148, 4939)]